Experimental Test of Landauer's Principle at the Sub-kBTLevel

Orlov, Alexei O.; Lent, Craig S.; Thorpe, Cameron C.; Boechler, Graham P.; Snider, Gregory L.

doi:10.7567/jjap.51.06fe10

Cited by 58 publications

(23 citation statements)

References 27 publications

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“…In fact, the miniaturization of technologies has led a significant interest in the thermodynamics of small systems that are out-of-equilibrium, both from the classical [8,9] and quantum point of view [10][11][12]. One the most exciting developments in this line of research is the recent availability of experimental platforms to explore energetic features of small information processing systems [13][14][15][16][17][18][19]. In the quantum domain, Landauer's principle has been studied extensively [20][21][22][23][24][25][26], and the first experiments addressing the energetic costs of information processing are just coming along [27][28][29][30].…”

Section: Introductionmentioning

confidence: 99%

Full counting statistics approach to the quantum non-equilibrium Landauer bound

et al. 2017

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We develop the full counting statistics of dissipated heat to explore the relation with Landauer's principle. Combining the two-time measurement protocol for the reconstruction of the statistics of heat with the minimal set of assumptions for Landauer's principle to hold, we derive a general one-parameter family of upper and lower bounds on the mean dissipated heat from a system to its environment. Furthermore, we establish a connection with the degree of non-unitality of the system's dynamics and show that, if a large deviation function exists as stationary limit of the above cumulant generating function, then our family of lower and upper bounds can be used to witness and understand first-order dynamical phase transitions. For the purpose of demonstration, we apply these bounds to an externally pumped three level system coupled to a finite sized thermal environment.

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Section: Introductionmentioning

confidence: 99%

Full counting statistics approach to the quantum non-equilibrium Landauer bound

et al. 2017

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“…It is in erasing such information that dissipation [54,71,75] and irreversibility creep in, restoring the second law; this is known as Landauer's Principle. This creation of heat through information erasure has been experimentally verified [76][77][78], and it has also been shown that if the information storage is entirely reversible then a vanishing amount of heat is dissipated [77,79].…”

Section: The Role Of Quantum Informationmentioning

confidence: 84%

Perspective on quantum thermodynamics

2016

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Classical thermodynamics is unrivalled in its range of applications and relevance to everyday life. It enables a description of complex systems, made up of microscopic particles, in terms of a small number of macroscopic quantities, such as work and entropy. As systems get ever smaller, fluctuations of these quantities become increasingly relevant, prompting the development of stochastic thermodynamics. Recently we have seen a surge of interest in exploring the quantum regime, where the origin of fluctuations is quantum rather than thermal. Many questions, such as the role of entanglement and the emergence of thermalisation, lie wide open. Answering these questions may lead to the development of quantum heat engines and refrigerators, as well as to vitally needed simple descriptions of quantum many-body systems.

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“…This principle imposed the Landauer bound of k B T ln2 as the minimum energy dissipation on irreversible logic operations, such as AND and OR, because they erase 1-bit information at every logic operation. After long discussions and numerical analyses of this energy bound456, some very recent experimental demonstrations that confirmed its validity have been reported78. These results indicate that the Landauer bound limits the minimum energy dissipation in modern CMOS-based computers9101112, which perform irreversible logic operations.…”

mentioning

confidence: 87%

Reversible logic gate using adiabatic superconducting devices

Takeuchi

Yamanashi

Yoshikawa

2014

Sci Rep

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Reversible computing has been studied since Rolf Landauer advanced the argument that has come to be known as Landauer's principle. This principle states that there is no minimum energy dissipation for logic operations in reversible computing, because it is not accompanied by reductions in information entropy. However, until now, no practical reversible logic gates have been demonstrated. One of the problems is that reversible logic gates must be built by using extremely energy-efficient logic devices. Another difficulty is that reversible logic gates must be both logically and physically reversible. Here we propose the first practical reversible logic gate using adiabatic superconducting devices and experimentally demonstrate the logical and physical reversibility of the gate. Additionally, we estimate the energy dissipation of the gate, and discuss the minimum energy dissipation required for reversible logic operations. It is expected that the results of this study will enable reversible computing to move from the theoretical stage into practical usage.

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Experimental Test of Landauer's Principle at the Sub-k_BTLevel

Cited by 58 publications

References 27 publications

Full counting statistics approach to the quantum non-equilibrium Landauer bound

Full counting statistics approach to the quantum non-equilibrium Landauer bound

Perspective on quantum thermodynamics

Reversible logic gate using adiabatic superconducting devices

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